Results 101 to 110 of about 84,030 (303)

Flora Polínica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, Brasil). Família 68: Sapotaceae

open access: yesHoehnea
RESUMO No presente trabalho foram estudados seis gêneros e oito espécies de Sapotaceae (Chrysophyllum marginatum (Hook. & Arn.) Radlk., Diploon cuspidatum (Hoehne) Cronq., Ecclinusa ramiflora Mart., Micropholis cuneata Pierre ex Glaziou, Pouteria bullata
Maria Margarida da Rocha Fiuza de Melo   +2 more
doaj   +1 more source

Natural hybridization between Populus nigra L. and P. x canadensis Moench. Hybrid offspring competes for niches along the Rhine river in the Netherlands [PDF]

open access: yes, 2008
Black poplar (Populus nigra L.) is a major species for European riparian forests but its abundance has decreased over the decades due to human influences.
Arens, P.F.P.   +6 more
core   +2 more sources

Making Two out of One: Kinesin Motors Driving Plant Cell Division

open access: yesCytoskeleton, EarlyView.
ABSTRACT The Kinesin superfamily of microtubule dependent motors is present in all eukaryotes. Not all of the subfamilies are represented in all kingdoms, and the ones that are do not always show conserved functions. Tight control of the cytoskeleton is essential for proper progression and completion of mitosis and cytokinesis, and key functions are ...
Choy Kriechbaum, Sabine Müller
wiley   +1 more source

Functional analysis of the Arabidopsis TETRASPANIN gene family in plant growth and development [PDF]

open access: yes, 2015
TETRASPANIN (TET) genes encode conserved integral membrane proteins that are known in animals to function in cellular communication during gamete fusion, immunity reaction and pathogen recognition.
Himanen, Kristiina   +6 more
core   +1 more source

Quantifying plant dispersal: New methods from multiple disciplines

open access: yes
Applications in Plant Sciences, EarlyView.
Lauren L. Sullivan   +3 more
wiley   +1 more source

In Vitro Live Cell Imaging Reveals Nuclear Dynamics and Role of the Cytoskeleton During Asymmetric Division of Pollen Mitosis I in Nicotiana Benthamiana

open access: yesCytoskeleton, EarlyView.
ABSTRACT Pollen is a male gametophyte of angiosperms. Following meiosis, the microspore undergoes an asymmetric division called pollen mitosis I (PMI), which produces two cells of different sizes: a large vegetative cell and a small generative cell. Polarized nuclear migration and positioning during PMI are important for successful pollen development ...
Yoko Mizuta   +5 more
wiley   +1 more source

Pollen types of Sapindaceae from Brazilian forest fragments: apertural variation [PDF]

open access: yesActa Botânica Brasílica
Morphological variations in angiosperm pollen grains may aid in the differentiation of families, genera and species. Sapindaceae pollen morphology holds promise for the recognition of taxa of this cosmopolitan family, which is well distributed in ...
Talita Kely Bellonzi   +4 more
doaj   +2 more sources

Acaciapollenites acaciae sp. nov., una nueva políade de mimosoidea del neógeno, en la Cuenca del Colorado, Argentina [PDF]

open access: yes, 2006
Fossil mimosoid polyads have been recently recovered from Neogene deposits in the Colorado Basin, Argentina, and the new species Acaciapollenites acaciae sp. nov.
Caccavari, Marta Alicia   +1 more
core  

A Taxonomic and Ecological Study of the Asilidae of Michigan [PDF]

open access: yes, 2017
Seventy-two species of Asilidae have been recorded from Michigan. An additional seven which may occur are included. Keys to subfamilies, genera and species are given. Two subfamilies and twenty-five genera are represented.
Baker, Norman T, Fischer, Roland L
core   +3 more sources

Powerful yet challenging: mechanistic niche models for predicting invasive species potential distribution under climate change

open access: yesEcography, EarlyView.
Risk assessments of invasive species present one of the most challenging applications of species distribution models (SDMs) due to the fundamental issues of distributional disequilibrium, niche changes, and truncation. Invasive species often occupy only a fraction of their potential environmental and geographic ranges, as their spatiotemporal dynamics ...
Erola Fenollosa   +4 more
wiley   +1 more source

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